Spotted at a Mets-Yankees game : r/seinfeld
Uncle Mike's Musings: A Yankees Blog and More: November 4, 2009: The Last Yankee Title
When 'Seinfeld' Abandoned The Mets For The Yankees
Why did Seinfeld go from Mets to a Yankee fan base? : r/seinfeld
Buck Showalter Interview Mets'd Up Podcast
Mets host Seinfeld bobblehead night at Citi Field - ESPN
Mets to host Seinfeld Night vs. Phillies, reunite Keith Hernandez and Jerry Seinfeld
When 'Seinfeld' Abandoned The Mets For The Yankees
Uncle Mike's Musings: A Yankees Blog and More: Top 5 Reasons You Can't Blame Roger Clemens for Throwing a Bat at Mike Piazza in the 2000 World Series
Seinfeld's 6 New York Yankees Cameos Explained
100 best Seinfeld episodes of all time – The Morning Call
Buck Showalter Interview Mets'd Up Podcast
Jerry Seinfeld calls Lady Gaga a 'jerk' after her bizarre baseball game behaviour
Seinfeld throws Mets first pitch with windup